Add 28/42 and 4/80
28/42 + 4/80 is 43/60.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 80 is 1680
Next, find the equivalent fraction of both fractional numbers with denominator 1680 - For the 1st fraction, since 42 × 40 = 1680,
28/42 = 28 × 40/42 × 40 = 1120/1680 - Likewise, for the 2nd fraction, since 80 × 21 = 1680,
4/80 = 4 × 21/80 × 21 = 84/1680 - Add the two like fractions:
1120/1680 + 84/1680 = 1120 + 84/1680 = 1204/1680 - 1204/1680 simplified gives 43/60
- So, 28/42 + 4/80 = 43/60
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